MAINTENANCE
IC75 ENG 4-37
TROUBLE SHOOTING
Regarding to actions marked with *, contact the distributor or service personnel.
SYMPTOM PROBABLE CAUSE REMEDY
Levers cannot be
controlled smoothly.
• Short of grease at lever operating
portions
• Defect of control valve
• Supply oil or grease.
• Repair or replace parts.*
Machine does not
travel fast and
powerfully.
• Short of hydraulic oil
• Lowered pressure set for relief
valve
• Defect of motor or reduction gear
• Defect of pump
• Over-tensed crawler
• Supply oil up to specified level.
• Repair or replace parts.*
• Repair or replace parts.*
• Repair or replace parts.*
• Adjust both right and left tension
to regular value.
Speed does not
change even if
changing selectors.
• Discontinuity or disconnection of
electric wires.
• Defect of solenoid valve for
speed selection
• Repair or replace parts.*
• Repair or replace parts.*
Machine curves
during travel.
• Tangled obstacle
• Unequal tension of right and left
• Loose stopper bolt of travel
selector lever
• Remove obstacle
• Adjust tension of right and left to
regular value.
• Adjust and fix stopper bolts
Machine does not
travel smoothly.
• Tangled stone and obstacle
• Over-tensed crawler
• Short of hydraulic oil
• Defect of motor or reduction gear
• Defect of pump
• Remove obstacle.
• Adjust tension of right and left to
regular value.
• Supply oil to specified level.
• Repair or replace parts.*
• Repair or replace parts.*
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